An apartment building, condominium, residence hotel, or other building that is subdivided into multiple residences. An MDU has considerable implications for local loop deployments, particularly with respect to passive optical network (PON). See also local loop and PON.
(1) (Multiple Dwelling Unit) A commercial or residential building with multiple offices or apartments. See BLEC and multitenancy.
(2) (Multiply-Divide Unit) A high-speed circuit that performs multiplication and division within the CPU.